NRXN1 and autism: Hub genes of the turquoise module included one GABA receptor encoding genes such as Gabrb1, one glutamate receptor gene (Grid2) and genes tightly associated with synaptic development and autism (Nrxn1, Lrfn5, Plcb1, Erc2, Frmpd4, Tanc2, Ctnnd2, Dmd).